View clinical trials related to Schizophrenia.
Filter by:The aim of the study was to evaluate the efficacy, safety, and cognitive function of transcranial direct current stimulation (tDCS) in chronic schizophrenia patients with tardive dyskinesia (TD).
Evidence suggests that repeated or chronic ketamine use, as compared to acute ketamine users, posed a higher clinical risk of developing psychotic disorders, potentially related to the underlying chronic N-methyl-D-aspartate receptor (NMDAR) dysfunction, and a higher risk of suffering from schizophrenia particularly in those genetically susceptible, or genetically predisposed ketamine abusers. With ketamine infusion rises as a emerging hope as an acute treatment for depression and suicidality under the shadow of unknown longer term psychotomimetic effects peculiarly amongst repeated or chronic use, the current case-control study aims to investigate: a) if repeated or chronic ketamine use is associated with an increased risk of psychosis by comparing those ketamine abusers with and without psychosis, and to those non-ketamine-using drug abusers with psychosis; and b) if genetic predisposition from single nucleotide polymorphisms are associated with risk of psychosis in ketamine abusers.
This is a 4 week therapeutic pilot study with a 4 week follow-up period involving inpatients with treatment resistant DSM-IV schizophrenia or schizoaffective disorder diagnosis. Each eligible subject will receive either 20 minutes of active tDCS (transcranial direct-current stimulation) or sham stimulation twice a day on 5 consecutive weekdays for 4 weeks with a 4 week follow-up period.
The majority of schizophrenia patients is impaired in hand gesture performance, which contributes to poor functional outcome and poor communication skills. The left inferior frontal gyrus (IFG) and the left inferior parietal lobe (IPL) are key nodes of the gesture network, which is less active in patients with schizophrenia. Here, the investigators test single sessions of rTMS/TBS known to either enhance or inhibit local brain activity for app. 1 hour. The investigators aim to determine, which protocol may improve gesture performance in patients and healthy controls. This is a randomized, double-blind, cross-over, placebo-controlled single-center trial in 20 patients with schizophrenia spectrum disorders and 20 healthy controls. Gesture performance will be tested immediately after each TMS session, which are separated by 48 hours. Results of this study will inform larger interventional trials comparing 2 TMS protocols with repeated administration.
The purpose of this study is to help people with serious mental illness get and keep the job they want by improving their thinking skills, using cognitive remediation therapy. For people with serious mental illness, the Individual Placement and Support (IPS) Program is an effective approach to help people become employed. Despite its general success, still only 55% of clients find employment. Most of that success occurs in the first three months; after six months, the chances of finding competitive work are quite low. Among those who fail to find employment with IPS, cognitive dysfunction is often a significant problem. The proposed study will target IPS clients who have not found work after 3 months of employment-support services: our hypothesis is that, after three months with no success, the addition of cognitive remediation to IPS will improve employment rates (compared to those who continue to receive IPS alone). The proposed randomized controlled trial will use a single-blind study design, focused on IPS clients who are slow to (or may never) find employment success. Specifically, the proposed study will have two treatment arms: a) cognitive remediation added to continued IPS services, and b) continued IPS services alone. The study will collaborate with IPS workers at 11 Mental Health and Substance Use (MHSU) clinics to identify clients who are non-responders in the first 3 months, and seek their consent to participate in the study. They will be randomized to either TAU (continuation with IPS and other standard treatments), or TAU plus cognitive remediation. The CRT will consist of computerized cognitive exercise practice, strategy coaching, and teaching coping/compensatory strategies for 12 weeks. Clients will be assessed at 3-time points: prior to the start of cognitive remediation ("baseline"), end-point (3-month), and 6 months after the endpoint evaluation. Primary outcome measures will include success at gaining a competitive job, total hours of competitive employment, and neuropsychological measures of cognition.
Cerebellar vermis anomalies are present in schizophrenic individuals. This condition leads to postural balance problems. Foot and ankle complex have a special role for maintaining balance. However, there is no study about this topic in schizophrenic individuals.
The study investigates the efficacy of aerobic exercise on cognitive performance and brain plasticity in schizophrenia.
This is a study designed to evaluate the efficacy and safety of lurasidone in acutely psychotic patients with chronic schizophrenia and to confirm the non-inferiority of lurasidone relative to quetiapine XR.
The study is performed in 20 different hospitals from 19 cities in China. Three sub-projects are included. About sub-project 1, we build a clinical database system and a biological sample bank for data and samples management, which is applicable in other hospitals in this project. 1800 first-episode schizophrenia patients will be recruited in 19 sites and randomized into 6 treatment groups (olanzapine, risperidone, aripiprazole, ziprasidone, amisulpride, haloperidol). Through 8-week treatment and follow-up, we collect multidimensional indexes from psychopathology, neuropsychology, brain imaging, physiology, biochemistry, and life stress data. The summarized data is analyzed to screen potential biomarkers or biomarker panel that may predict the antipsychotic response, and ultimately to establish a prediction model.Sub-project 2, as an extension of sub-project 1, includes verification of the prediction model established in sub-project 1 and optimization of the current therapy with add-on treatment. Firstly, the validation process of the prediction model undergoes with an independent patient cohort. Next, we apply the add-on treatment to the patients who don't have ideal response to antipsychotic treatment after 8-week treatment. According to the results above, we manage to construct an optimized and individualized therapy for schizophrenia.In the end,We tend to conduct a randomized double-blind controlled trial to assess the safety and efficacy of the combination strategy for antipsychotic-induced metabolism syndrome, which includes metformin and lifestyle intervention. In the meanwhile, for schizophrenia patients at high-risk of metabolic syndrome, we tend to establish a prevention strategy expected to reduce or delay the occurrence of metabolic syndrome, which includes low-dose metformin and lifestyle intervention. We hope to successfully construct a comprehensive intervention strategy on metabolic syndrome induced by antipsychotic medications.
Auditory verbal hallucinations (AVH) are commonly reported as source of distress, disability and mortality in schizophrenia. Despite proven efficacy of antipsychotics, many patients still experience drug-refractory AVH. It has been postulated that AVH is maintained by negative emotions. Yet, little is known about the temporal relationship and underlying mechanisms between negative affect and AVH. Utilizing both an ecologically-validated method and brain imaging technique, this study aims to uncover the role of emotions in the maintenance of psychotic symptoms.